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Keep your refreshments close at hand during those long hikes with Hydrapak's Osprey Hydraulics® 3L Reservoir. Featuring a HydroStatic backerplate, it is conveniently designed to fit in full packs and maintain a compact profile for effortless transportability. In addition, all components are completely BPA-free, phthalate-free, and lead-free and have been certified to be food-safe according to FDA and EU regulations - making sure that you can stay hydrated on the trail safely!

  • Hydrostatic Backerplate - Hydrostatic backerplate provides structure to shove a full reservoir into a fully loaded pack and maintains a flat profile.
  • Slide-Seal - Easy Slide-Seal top opening, seals watertight and provides wide access for easy filling and cleaning
  • Pour Shield - Pour shield extends the collar to ease filling in shallower sinks and control pouring into pots or bottles
  • Carry Handle - The Carry handle allows easy reservoir management and filling
  • Magnetic Bite Valve - Magnet clip attaches to the reservoir hose and pairs with the included sternum strap magnet for easy water access and hose management
  • Hydrapak Blaster - Hydrapak Blaster bite valve offers fast, smooth water flow with a ¼ twist on/off switch
  • QuickConnect System - The QuickConnect system allows easy removal/filling of the reservoir and filtering in the backcountry


  • Volume: 3L
  • Weight: 308g
  • Fabric: TPU film